Antiskid tire device.



8.1. KOSHT 11. A. PERlLLA.

ANTISKID TIRE DEVICE. APPucATmN man 1111111.15. 1918. RENEwEo 15s.7.1919.

1 ,297,869 Patented M111'. 18, 1919.

y A www UNTTED sTATEs PATENT oEErcE.

STEPHEN J'. KOSHT .AND JOHN A. PETRILLA, OF PITTSBURGH, PENNSYLVANIA.

ANTISKID TIRE DEVICE.

Patented Mar. 18, 1919.

Application filed March 15, 1918, Serial No. 222,680. Renewed February7, 1919. Serial No. 275,680.

To all whom t may concern: y

Be it known that we, STEPHEN J. KosHT and JOHN A. PETRILLA, citizens ofthe United States, residing at-Pittsburgh, in the county of Alleghenyand State of Pennsylvania, have invented new and useful Improvements inAntiskid Tire Devices, of which the following is a specification.

This invention relates to an anti-skid device for tires and has for itsprimary object to provide a substantial construction that 1s capable ofwithstanding the rough usage when the device is used upon motor trucktires.

An object of the invention is to provide a device that may be quicklyfastened to a tire and when in place will be held against movement inany direction.

Another object of the invention is to provide an anti-skid device ofsuch a construction that it will be readily formed into a shape toconform to the peripheral surface of a tire.

With these and other objects in view the invention will be betterunderstood from the following detailed description taken in connectionwith the accompanying drawing wherein:

Figure l is a sideV elevation of a wheel and tire showing our inventionapplied thereto.

Fig. 2 is a sectional view through that form of anti-skid deviceillustrated in Fig. 1.

Figs. 8 and 4L are sectional views through modied forms of ourinvention.

Referring more particularly to Figs. l and 2 of the drawing the numerall designates a plurality of bands encircling the tread of the tire andof the proper resiliency to allow the same to be readily placed inposition. Effectively binding these bands together are calks 2 fastenedto the bands transversely across the tread of the tire. These calks maybe secured to the bands in any suitable manner found necessary inpractice. Secured to the bands at spaced intervals are clips 3 shaped tohave angularly disposed end portions t engaging the sides of the tirewhile those clips arranged at the ends of the band are further looped asindicated at 5 to form openings 6 for the passage of tightening bolts 7.

From this construction it will be seen that the device may beeffectively sprung into a Gopies of this patent may be obtained for vecents each, by addressing the position upon the tire and theneffectively forced into tight engagement with the periphery of the tireby tightening on the bolts 7. By this arrangement any degree of pressuremay be accomplished between the bands and the periphery of the tirewhile the formation of the clip prevents movement of the devicelaterally of the tire.

The construction illustrated in Fig. 3 is identical with that I havejust described with the exception that I provide independent calks foreach band and the clip 9 is of a formation to engage one side and twoedges of the band as illustrated at 10, while rivets 11 pass through thecalks, clip and bands. By this construction it will be seen that thebands are effectively held against displacement and excessive strainupon one band will be transmitted to all the bands proportionately. InFig. it the calk 12 and clip 13 are of a shape to conform to that typeof tire having a central groove 14.

- This is a. very important feature of my invention as the device may bemade of any shape to effectively engage the periphery of any shapedtire.

It is to be understood that the structural embodiment of the inventionas/a whole and its various features as shown are Ymerely illustrativeand not restrictive, since I am well aware that many of the details ofconstruction can be widely varied without departing from the spirit ofthe invention. I therefore do not desire to be limited in theseparticulars or in any other, except as set forth in the appended claim.

Having described our invention, what we claim is:

An anti-skid device for tires comprising circular bands for engagementwith the periphery of a tire, clips extending transversely across thebands and having their ends turned down to engage the sides of the tire,calks arranged on the clips, and securing elements passing through thecalks, clips and bands, each of said clips having its intermediateportion bent to embrace the bands and thereby preventing movement of thebands when in place.

In testimony whereof we aiiiX our signatures.

STEPHEN J. KOSHT. JOHN A. PETRILLA.

Commissioner of Intente,

Washington, D. G."

